APA引文

Schmookler, J. (1972). Patents, Invention, and Economic Change: Data and Selected Essays. Cambridge: Harvard University Press.

Trích dẫn kiểu Chicago

Schmookler, Jacob. Patents, Invention, and Economic Change: Data and Selected Essays. Cambridge: Harvard University Press, 1972.

MLA引文

Schmookler, Jacob. Patents, Invention, and Economic Change: Data and Selected Essays. Cambridge: Harvard University Press, 1972.

警告：這些引文格式不一定是100％准確.